Comprehensive Building Performance Monitoring: Supporting Outcome-Based Design and Construction Provisions

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Building energy use is responsible for 28% of Canada’s greenhouse gas emissions. To reduce the environmental impact of buildings as well as improve occupant health and comfort, codes and standards governing building design are becoming increasingly stringent. Compliance with these provisions is assessed before the building is occupied and so we assume buildings perform exactly as designed, but this is not the case. The impact of construction, operation and occupant behavior contribute to a gap between specified and actual performance. This performance gap has serious consequences including impeding regulatory efforts to reduce the environmental impact of buildings, affecting the credibility of high performance building rating systems and creating uncertainty for the owners about building performance and the long-term value of their investment.